Hi,
I killed mine few months ago. It was really great flyer. I powered it with Magnum XL .61. Lot of power and fun.
Yes, it was hard to handle on the ground on the beginning, but once used - was great.
Now building a bigger one: Dyna Flite Super Decathlon. It's a giant scale version powered with ZDZ-40 gas engine.
http://rc.marekszulen.net/dyna-deca.html
Regarding to the antenna: I had it on the upper side of fuselage until the end. The rest freely hung out of the fuselage.